Have you tried the source, Hadco Engineering, Inc.....
Hadco Engineering, Inc.
Since 1945 Hadco has produced a full line of axle and brake assemblies and components for thousands of light and heavy-duty vehicle applications.
Telephone, fax and web
Tel: +1909 278 1952
Fax: +1909 278 1954
-"You want to make it two inches - or, if you're working in centimeters, make sure it's enough centimeters for two inches."-Red Green